Electric-current indicator.



1L JLQQAQW,

OTTO MOESSNER, DEGD. OSGAR monssnm, ADMINISTRATQR. ELECTRIC CURRENTINDICATOR.

APPLICATION/FILED OCT. 22, 1913.

W Jo X Patented Ju1y'21, 1914;

@TTG EIGESSNEYJ,

HAVEN, CONNECTICUT, ADMINISTRATQB F SAID 0F PHILADELPHIA, PENNSYLVANLEA;@SC it ELZQESSNELE (915 NEW anaemic-scanner recreation.

moaned Specification oi? Letters Tfatent.

Patented July 21, 19114..

Application filed October Q2, 1913. Serial lilo. 7%,5'25.

v T 0 (ZZZ 207mm it may concern 3e it. known that l, OTTO ll'ionssnnn, acitizen of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulElectric-Current Indicator, of which the following is a specification. I

lhe object of my invention is to provide a current indicator which canbe readily con nected into an electric circuit, such as that leadingfrom an electric lamp socket or plug, receptacle to electric energyconsuming devices like electric fiat iron heaters, etc., and whenso'connected will indicate that the electric current is flowing to thedevice so that when the latter is not in use it may not be leftconnected and become overheated and thereby create a fire hazard, andalso waste .the energy.

lVith this object in view, my invention consists in a device having thefeatures of an ordinary attachment plug, or receptacle and combiningwith these features a small electric lamp in such a way as to form acompact structure which can be used safely and conveniently by theaverage person My invention is satisfactorily illustrated in theaccompanying drawing and it is understood that the details ofconstruction can he varied without affecting the spirit of theinvention, so that the invention is not limited to the specific detailsshown and described.

Figure 1 represents a longitudinal sec tion of an electric currentindicator embodying my invention. Fig. 2 represents a transverse sectionon line m-:v Fig. 1. Fig. 3 represents a transverse section on line 2 iFig. 1. Fig. 4 represents a side elevation of a connection detached fromFig. 1. The remaining figures represent side elevations and a section ofother embodiments of the invention.

Similar numerals of reference indicate corresponding parts in thefigures Referring to the drawings, 1 designates a plug which is composedof the body 2 of insulating material and the inclosing metallic shell 3which is adapted to be screwed to a lamp socket or receptacle. 1n theouter end of said plug is the metallic contact 'tip l extending fromwhich in said body is the metallic conductor 5, the inner end of whichis connected with the main link 6, which is on the under side of thebody 2, and adjacent to the connector link 7, which is sup ported on thecollar 8 of insulating material below said body 2, and connected withthe link 6 by the screw 9.

Within the collar 8 is secured the screw' shell .10 to which isfittedthe head of the electric light lamp It, said head being providedwith the tip 12 which is adapted to form an electric contact with thetip 13, the latter being on an end of the connector 14, which isattached to the link 7 1n the body 8 is the connector 15 which joins theshell 10 and is attached by the screw 16 with'the link 17, the latterhaving its upper portion extending from the top shell 8 through the body2 and then along h the side of the collar 8 and below the same,

its lower end having the flange 18 which by means of the screw '19 isconnected with the socket 20 below the same. The link 7 has an extension21 angularly downward therefrom, the lower end thereof having a flange22, which by means of the screw 23 is connected with the socket 20, thehead of said screw which is on the underside of the top of said socket20 forming the contact tip 24.

Within said socket is the screw shell 25 which is secured to the same bythe screw 19, said shell being adapted to receive the plug '26 which isprovided with a. tip 27, which may be placed in electric contact withthe tip 24 in said collar 20, said plug having wires 28 which may extendto an electric heated sad iron or other electric energy consumingdevice.

Surrounding the lamp 11, the body or collar 8. and the links 6, 7, 21and 17 is the cylinder 29 of transparent insulating material as aninclosure and protector and guard for said members. 7

It will be seen that the electric current from the source of supplyenergizes the lampl1, and also passes to the place of consumption, inthe present case, the sad iron above referred to, the lamp thusindicating that the current is flowing to said iron, thus preventingfires which are caused by the iron being left connected and overheated.

vwhen the current should have belen cut-off frbm the iron.

In Fig. 5 the top body 6 is provided with a key or other snap switch 30for evident purposes, and the bottom socket can be of the form shown inFig. 1, or any of the forms shown in Figs. 9 to 12 inclusive.

In Figs. 6, 7, and 8, the top bodies 32 are provided with difi'erentforms of contact fingers 33 which are proportioned to fit receptaclesnow on the market.

In Fig. 9, I show a cap '31 which is attached to the bottom of the links17, 21 and is in mechanical and electrical-connection therewith, itcarrying the wires 28 which lead to the electric energy consumingdevice.

Figs. 10 to 12 inclusive show difiere'nt forms of bottom socket endswhich can be used in place of those shown in Figs. 1 and 9.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is

1. In a device of the character stated, means for connection to contactsof an electric supply-circuit, conductors from said means, means forconnecting the lines of an implement-actuating circuit to said c0n'ductors, and an electric lamp in constant shunt connection with saidconductors.

2. In a device of the'character stated, a frame having means at one endfor detach- 1,1o4,440 V V ably connecting it to a coupling of anelectric supply-circuit and having contacts and having at its other endmeans for connecting the lines of an implement-actuating circuit,conductors in said frame and connected to said contacts and connectingmeans, and an electric lamp in constant shunt-connection with saidconductors.

3. In a device of the character stated, a plughaving contacts adapted tocontact with contacts of an electric supply-circuit, a transparentcylinder secured at one end to said plug, a body secured to the otherend of said cylinder and having a plug-socket,

OTTO MOESSNER.

\Vitnesses JOHN A. VIEDERSIIEIM', N. Bussmonn.

